What happened with sigt coin supply on coinmarketcap? it shows less than 100M coins?

Do you mean

Circulating Supply
92,287,724 SIGT?

mining is not finished yet.

There should be 110M+ coins in circulation? at least thats the number it showed this morning...correct me if I am wrong

That's because the block explorer they use is being migrated. Should be back to normal soon.

Is this still going on? http://explorer.signatum.download is showing an incomplete transaction history now.